Add missing cstdint includes to avoid compiler errors because of unknown symbols uint32_t and so on

src/catch2/catch_test_case_info.hpp

@@ -17,6 +17,7 @@
 
 #include <string>
 #include <vector>
+#include <cstdint>
 
 #ifdef __clang__
 #pragma clang diagnostic push

src/catch2/internal/catch_string_manip.hpp

@@ -13,6 +13,7 @@
 #include <string>
 #include <iosfwd>
 #include <vector>
+#include <cstdint>
 
 namespace Catch {
 

src/catch2/internal/catch_xmlwriter.cpp

@@ -13,6 +13,7 @@
 
 #include <iomanip>
 #include <type_traits>
+#include <cstdint>
 
 namespace Catch {